Microsoft Exchange Server 2010 SP3, Exchange Server 2013 SP3, Exchange Server 2013 CU16, and Exchange Server 2016 CU5 allows an open redirect vulnerability that could lead to spoofing, aka "Microsoft Exchange Open Redirect Vulnerability"
Published Jul 11, 2017
6.1
MEDIUMCVSS 3.0
EPSS 3.17%
Description
Microsoft Exchange Server 2010 SP3, Exchange Server 2013 SP3, Exchange Server 2013 CU16, and Exchange Server 2016 CU5 allows an open redirect vulnerability that could lead to spoofing, aka "Microsoft Exchange Open Redirect Vulnerability".
Affected products
-
- Version Microsoft ExchangeStatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Microsoft Corporation | n/a | n/a |
|
- 2010
- 2013
- 2013
- 2016
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
AV:N/AC:M/Au:N/C:P/I:P/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (22 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 3.17% (0.03170) | 87.60th | v5 (v2026.06.15) |
| Sep 22, 2026 | 3.17% (0.03170) | 87.46th | v5 (v2026.06.15) |
| Sep 21, 2026 | 4.45% (0.04446) | 91.00th | v5 (v2026.06.15) |
| Sep 6, 2026 | 3.17% (0.03170) | 87.18th | v5 (v2026.06.15) |
| Sep 5, 2026 | 4.45% (0.04446) | 90.80th | v5 (v2026.06.15) |
| Aug 30, 2026 | 3.17% (0.03170) | 87.11th | v5 (v2026.06.15) |
| Aug 28, 2026 | 4.45% (0.04446) | 90.74th | v5 (v2026.06.15) |
| Aug 24, 2026 | 3.17% (0.03170) | 87.03th | v5 (v2026.06.15) |
| Aug 23, 2026 | 4.45% (0.04446) | 90.71th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.17% (0.03170) | 86.32th | v5 (v2026.06.15) |
| Mar 29, 2025 | 0.44% (0.00437) | 45.82th | v4 (v2025.03.14) |
| Mar 17, 2025 | 1.59% (0.01590) | 80.38th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.29% (0.00292) | 69.97th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.29% (0.00292) | 68.26th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.29% (0.00292) | 64.23th | v3 (v2023.03.01) |
| Mar 6, 2023 | 6.42% (0.06416) | 91.03th | v2 (v2022.01.01) |
| Apr 1, 2022 | 6.42% (0.06416) | 90.14th | v2 (v2022.01.01) |
| Feb 4, 2022 | 6.42% (0.06416) | 78.00th | v2 (v2022.01.01) |
| Feb 3, 2022 | 8.76% (0.08756) | 86.41th | v1 |
| Jan 6, 2022 | 8.76% (0.08756) | 86.25th | v1 |
| Sep 1, 2021 | 8.76% (0.08756) | 93.70th | v1 |
| Apr 14, 2021 | 8.76% (0.08756) | 0.00th | v1 |
References (3)
- http://www.securityfocus.com/bid/99533 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1038852 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- https://portal.msrc.microsoft.com/en-us/security-guidance/advisory/CVE-2017-8621 x_refsource_CONFIRMPatchVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/99533 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| http://www.securitytracker.com/id/1038852 | vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry | |
| https://portal.msrc.microsoft.com/en-us/security-guidance/advisory/CVE-2017-8621 | x_refsource_CONFIRMPatchVendor Advisory |
Change history (0)
No recorded changes yet.